Structural Configuration of the Otates Fault

PDF icon Download PDF
Date Published: 
December 2008

During the great 3 May 1887 Sonoran earthquake (surface-rupture endto- end length: 101.8 km; MW 7:5 ± 0:3), an array of three north–south-striking Basin and Range Province faults (from north to south: Pitáycachi, Teras, and Otates) slipped along the western margin of the Sierra Madre Occidental Plateau of northern Mexico. This detailed field survey of the previously undocumented 1887 earthquake rupture zone along the Otates fault includes mapping the rupture scarp and measurements of surface deformation at 25 sites

Reference Information: 

Suter, M., 2008. Structural configuration of the Otates fault (Southern Basin and Range Province) and its rupture in the 3 May 1887 M 7.5 Sonora, Mexico, earthquake: Bulletin of the Seismological Society of America, v. 98, p. 2879-2893.

Cited In: 
GPO
GPO - Appendix I

*This PDF document is not Section 508 accessibility compliant. If you require accessibility assistance, please contact us to Request Assistance.

EIS Status Update - Mar 2019

Screenshot of EIS Status Update document cover

As of March 15, a Draft EIS update is now available under the ‘Public Involvement’ tab. To view the update, click here.

EIS Timeline - Feb 2019

  1. Proponent submits revised Plan of Operations [Sep 2014]
  2. Federal Register Notice of Intent to prepare EIS [Mar 2016]
  3. Public scoping period and scoping meetings
    [5 meetings between Mar-Jun 2016; comment period extended from 60 days to 120 days, closed Jul 18, 2016 ]
  4. Compile and review existing data
  5. Prepare project description and identify project alternatives
  6. Publish Alternatives Evaluation Report [Sep 2017]
  7. We Are Here
    Validate Baseline Information; analyze environmental effects
  8. Prepare Draft EIS
  9. Federal Register Notice of Availability of Draft EIS
  10. 90-day public review and comment period, with public meetings
  11. Respond to public comments and prepare Final EIS
  12. Federal Register Notice of Availability of Final EIS and Draft ROD
  13. 45-day Public Objection Period
  14. Resolve objections to Final EIS and draft ROD
  15. Issue Final Record of Decision

[ View Larger Version ]

Forest Points of Contact

Media & General Info
John Scaggs
jscaggs@fs.fed.us

Project Manager
Resolution Copper
Mary Rasmussen
mcrasmussen@fs.fed.us

Apache Leap Special Management Area
Apache Leap SMA website